Approaches to Cleaning Rendered Limestone

I have an upcoming project that involves working on walls rendered with limestone. Given the relatively soft nature of this material, I’m choosing to use the Softwash method. However, I’m curious if the usual SH and EBC chemicals would be suitable, or if they might be too harsh and necessitate a different approach. Thanks in advance.

Why can’t you use your PW and just select the appropriate tips? I see no reason that a softwash system would be mandatory. I downstream other chems (like cleansol BC) by taking my dipstick and putting it in a bucket by the trailer. I don’t think I used EBC chems before so can’t help with that.

Test the limestone in an inconspicuous area.

There are several threads in this forum for cleaning limestone.